﻿/*
 *  Copyright (c) 2012 Brandon Ellenberger
 *
 *  This file is part of OpSatPlan.
 *
 *  OpSatPlan is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  OpSatPlan is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with OpSatPlan.  If not, see <http://www.gnu.org/licenses/>.
 */

using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text;

namespace OpSatPlan
{
    public class Problem
    {
        private Domain mDomain;
        private string mName;
        private ReadOnlyCollection<ValuedAtomicFormula> mInit;
        private ReadOnlyCollection<ValuedAtomicFormula> mGoal;
        private ReadOnlyCollection<PddlObject> mObjects;

        public Problem(Domain domain, string name, IList<ValuedAtomicFormula> init,
                        IList<ValuedAtomicFormula> goal, IList<PddlObject> objects)
        {
            this.mDomain = domain;
            this.mName = name.ToUpper();
            this.mInit = new ReadOnlyCollection<ValuedAtomicFormula>(init);
            this.mGoal = new ReadOnlyCollection<ValuedAtomicFormula>(goal);
            this.mObjects = new ReadOnlyCollection<PddlObject>(objects);
        }
        public Domain Domain
        {
            get
            {
                return this.mDomain;
            }
        }
        public string Name
        {
            get
            {
                return this.mName;
            }
        }
        public ReadOnlyCollection<ValuedAtomicFormula> InitialState
        {
            get
            {
                return this.mInit;
            }
        }
        public ReadOnlyCollection<ValuedAtomicFormula> GoalState
        {
            get
            {
                return this.mGoal;
            }
        }
        public List<PddlObject> GetObjects(Parameter parm)
        {
            IEnumerable<PddlObject> res = from obj in this.mObjects
                                          where parm.TypeMatches(obj)
                                          select obj;
            return new List<PddlObject>(res);
        }
    }
}
